B The news media on 2 trillion galaxies: Confused, or am I?

AI Thread Summary
Recent articles have reported that the universe may contain around 2 trillion galaxies, a significant increase from the previously estimated 100-200 billion. However, there is confusion regarding whether this figure represents the current number of galaxies or reflects a historical perspective when smaller galaxies existed before merging. The discussion highlights that while the number of galaxies may have increased in the past, it does not imply a rise in the amount of ordinary matter. Many news sources fail to clarify these nuances, focusing instead on sensational numbers that may mislead the public. This situation underscores the need for clearer communication in science journalism.
OwenR
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Hello. So the last few days there have been articles about how our universe may now contain around 2 trillion galaxies, up from 100-200 billion galaxies that was previously determined.

But unfortunately I can't make complete sense of the articles I've read, including the one on NASA's site. They seem either inconsistent or unclear. The articles suggest more or less that the 2 trillion number is what it used to be, when there were smaller galaxies and before many merged together to make bigger galaxies, but at the same time they either state the new number in the present tense or simply don't clarify on this point.

So my questions:
  1. Is 2 trillion galaxies what it should be currently, or simply what it used to be when the universe was younger?
  2. The new discovery still does not imply that there's more ordinary matter than what's already been estimated, or does it?
 
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The number of galaxies today is the same as it ever was.
The average size of galaxies in the distant past was smaller, so there were correspondingly more of them.
 
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Thanks for the confirm. That's what I thought . . . Unfortunate that much of the news media was too shallow to want to make that clear.
 
The lay public is entertained by the numbers, not the technical details.
 
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It's a real shame.

In another sense though, I'm glad. It made me finally get an account here. (Not that this compensates for the lay public's need for information the wrong way.)
 
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